Transformer-hoisting bracket



July 2s, 1925, `1,547,915

E. J. HlRN TRANSFORMER HOISTING BRACKET Filed Aug. 28, 1923 2 Sheets-Sheet l WITNESS:

WITNESS: ATTORNEY Ju1y2s,1.925. 1,547,915

4 E. J. HIRN I I TRANSFORMER HOISTING. BRAGKET Filed Aug. 28, 1923 n l2 Sheets-Sheet 2 Q6' 4 6- 17 14 mnu- :l-s I :amm

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ERNEST J. HIRN, 0F PRIRIE D'U SAC, WISCONSIN.

y 'rRANsroRMEn-HOISTING iaiuiciriicr.v

Application led *August 28, 1923. Serial No. 659,838.

To all whom it. may concern:

Be it known that I, ERNEST J. HIRN, a citizen of the United States, residing at Prairie du Sac, in the county of Sauk and State of Wisconsin, have invented new and useful Improvements in Transformer-Hoisting Brackets, of which the following is a specication.

This invention relates to hoisting apparatus and has for its object the provision of a novel bracket'structure4 designed to be clamped upon a pole on which are strung current carrying wires, the device being for the purpose of facilitating hoisting transformers so that they may be easily. handled and mounted.

An important and more specific Objectis the provision of a supporting bracket of this character which is provided with peculiar clampin means for-effecting mounting upon a po e, the clamping means being l` Iadji'istable for engagement uponv poles of vadvantages in view the invention consists different sizes.

An additional object is the provision of a device of this character which will'be simple and inexpensive to manufacture, light in weight, easy to install, elcient and durable in service' and a geheral improvement in the art. I

With the above and other objects and in the` details of construction to be hereinl after more full described and claimed and vist ings the letter lA designates a pole carry-V illustrated in t e accompanying drawings, in which: L

Figure 1 is a side elevation or the device mounted upon a pole and showingl it. in

use for elevating a transformer or like,

-Figure 2 is a detail section through. the -upper bracket arm illustrating the adjustability thereof,

, Figure 3 is a horizontal section on the line l 3 3 of Figure'l,

-Figure 4 is a horizontal section on the line 4-4 of Figure 1, I

Figure 5'is a side elevation of the device mounted upon a pole but with the main bracket extending in the opposite direction for relation as compared with Figure 1,

. Figure 6 is a cross section on the line 6--6 of Figure 5,

Figure 7 is a side elevation showing a Sli htly different arrangement of the parts,

lterminating at oneI end in a yoke 33 which igure 8 isa detail view of the brace. Referring more particularly to the drawpole bracket for block and tackle for facilitating n hoisting the transformer or for hoisting anything else desired as there is no restriction whatever as to the use. The bracket structure comprises an elongated upright L- shaped arm 10 including a vertical portion 11 and a horizontally extending upper portion 12 which terminates in a hook 13 which might be formed integrally with the arm 12 or formed separately therefrom andsecured thereto by any desired means which ever may be preferred. v

For mounting this` bracket upon the pole, I provide a pair of clamps which encircle the pole and which hold the bracket. The upper one of these clamps is designated by thenumeral 14 and it is formed preferably as la casting including a" body 15 terminatingat one end in a yoke -16 which is curved to conform substantially to the pole and which terminates inlaterally extending ears 17 formed with slots 18. The other end of the body is formed with an open-sleeve 19 terminating in ears 20. The vertical arm 11 of the bracket is engaged within the sleeve 19 and is clamped therein by a suitable vbolt `21 which passes through the holes in the ears 20 and which carries a nut 22.

In connection with the body 15` I provide a mating clamping member which is formed as a yoke 23 curved for engagement with the pole and mating with the yoke 16. The

asl

ends of this yoke terminate in ears 24v provided with slots 25 while the intermediate portion of the yoke is formed with a pair of spaced ears. 26 lapertured as shown. Pivotally connected with the free end portion of thehorizontal arm 12 is a brace rod 27 which has its other end Iiattened and vpivoted between the ears 26 by a bolt 28, For eecting the` clamping action upon the I provide .bolts 29 which pass through the slots 25 and 18 in the ears 24 and 17 respectively and which are equipped with nuts 30. In the modification shown in Figure 6 the bolts 29 `are replaced'by eyebolts 29a equipped with nuts 30 and connected by links 29.

The lower has one end Iformed with an apertured ear 34 v and its other 'end formed with an ear 35 los clamp 31 includes a body 32 `n0 having' an open ended slot 36 therein. Formed on the body is an open sleeve 37 terminating in apertured ears 38. The lower endl of the vertical arm 11 of the bracket is engaged within the sleeve 37 and is clamped .therein by a bolt 39 which passes through the ears 38. For holding this' lower clamping member upon the pole' I provide a chain 40 which has one end most link engaged within the apertured ear 34 and which has its other end engage'- able withinvthe slot 36 of the ear 35.

In Figure 1 I have shown the device mounted upon the pole with the upper clamp 14- located above the cross arm EI of the pole. The upper and lower clamps are engaged in embraclng relation upon the pole, the upper clamp being heldtight by the bolts 29 shown in Figure 3, or the bolts 29a shown in Figure '6. The lower clamp is held in posi tion by tightening the chain 40 and engaging one link thereof withinthe claw slot 36.

To make u se of the apparatus a suitable block and tackle C is engaged'upon the hook 13 and the lowerI block of the tackle is equipped with a sling D or the like' engaged j upon the transformer or other object; to be hoisted. Figure 1 shows the transformer as hoisted to a point adjacent the crossarm.

The hook 13 is adjustably mounted upon the upper arm 12 of the main bracket, 10 as clearly indicated in Figure 2.

In some other instances it is desirable that the upper arm 12 of the bracket extend away from the poleinstead of across the top thereof as shown in Figure 1 and in such an event the arrangement maybe as illustrated in Figure 5. This figure however, together with Figure 6, shows the two sections of the upper clamp 14 as connected by eye bolts which are in turn connected bylinks instead of using the ordinary bolts 29 as disclosed in Figure 3.

In Figure 7 the arrangement is substantially the same as in Figure 5 except that the main bracket 10 is slid downwardly with respect to the clamping members and the lower end of the brace :27 is connected between the ears 38 of the lower clamp instead of between the ears 20 of the upper clamp. v

From the foregoing description and a study of the drawings it will be apparent that I have thus provided a simply constructed and consequently inexpensive device whichv is easily applied to a pole and which will eciently operate to perform the functions for which it is intended so that it will be a great time and labor saver. y

, While I have shownl and vdescribed .the preferredl embodiment of the invention it is of course to be understood that I reserve the right to make such changes in the form,

construction and arrangement of parts as will not depart from the spirit of the yinvention or the scope of the subjoined claims.

Having thus; described my invention` I claim: v

`1. A derrick attachment for poles, comprising a pair of clamping members disposable against a pole-*1n superposed relation, a clamping bearing on each clamping member, an 'inverted L-shaped member having its vertical leg adjustably engaged within said bearings, and a brace pivotally connected with the extremity of the horizontal arm and adapted for connection with one of the clamping members.

2. In a derrick attachment for poles, a pair of clamping members adapted for engagement upon a pole in superposed relation, each clamping member including an pivotally connected with the free end of the horizontal arm of the derrick member and engageable with a selected one of said contractlng means for the bearings.

ERNEST J. HIRN. 

